The polyester/cotton blend is easy to care for since the fabric is less liable to shrink and crease. Fits mattresses with a thickness up to 25 cm since the fitted sheet has elastic edging. http://www.ikea.com/aa/en/images/products/knoppa-fitted-sheet-white__0419041_PE576028_S4.JPGKNOPPA Fitted sheet, whitehttp://www.ikea.com/aa/en/catalog/products/90173336/901.733.36IKEA$6.95